SPACI score report for 2zt2 in ASTRAL 2.01:

PDB Entry: 2zt2
SPACI score: 0.85
AEROSPACI score: 0.85

Experiment type: XRAY
Resolution: 1.21
R-factor: 0.146
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 0.228
WCK2 WHAT_CHECK Ramachandran: 0.79
WCK3 WHAT_CHECK Chi angles: 1.103
WCK4 WHAT_CHECK Backbone: 1.306

Note: Here are links to pages about PROCHECK and WHAT_CHECK.

Here is the full WHAT_CHECK report on this protein (linked from the WHAT_CHECK site).